Relic Middleware

A Middleware wraps a handler with additional logic. It can inspect/modify requests, transform responses, short-circuit with an early response, or handle errors.

typedef Middleware = Handler Function(Handler innerHandler);

Basic pattern

Middleware myMiddleware() {
  return (Handler innerHandler) {
    return (Request req) async {
      // Before: inspect or modify the request

      final result = await innerHandler(req);

      // After: inspect or transform the response